Reef Central Online Community
The Filter Guys

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > The Reef Chemistry Forum
Register Blogs FAQ Calendar Mark Forums Read


User Tag List

Thread Tools
Old 09/22/2017, 08:29 AM   #1
Registered Member
VJV's Avatar
Join Date: Jan 2014
Posts: 435
Can Ceramic rock leach Tin (Sn)

Hi, for the longest time my reef had perfect parameters for Calcium, All, Magnesium (and all others according to recent Triton tests) but acros have always struggled. They would hold for about a month and than they would slowly loose colour and eventually die. My nutrient levels have always been at zero (Hanna ULR Phosphorus and Salifert NO3) but what I have found in the Triton tests to be very high was Tin (Sn).

The levels were at 4,75 which is apparently too high.

I have not found any rusting piece of equipment (and in fact another test 3 months later showed a level of 3,49) but I have stumbled on the following article:

"The major commercial applications of tin are in tinplate, solder alloys, bearing metals, tin and alloy coatings (both plated and hot-coated), pewter, bronzes, and fusible alloys. In its chemical reactions, tin exists in two valence states (II and IV) and is amphoteric (able to react as both an acid and a base). In addition, it can link directly with carbon to form organometallic compounds. These properties have given rise to many important uses for tin chemicals—for example, in electroplating, agricultural and pharmaceutical products, and plastics and ceramics."

I have always used ceramic rock from a French company called "Aquaroche" and it is what I have in my system. Could the Tin be coming from those rocks?

I am not a Chemist so go easy on me

Last edited by VJV; 09/22/2017 at 09:03 AM.
VJV is online now   Reply With Quote
Old 09/22/2017, 03:05 PM   #2
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 86,998
I suspect that the rock is fine, but I can't be sure. You could try using a PolyFilter for a while. I suspect that it'd remove any extra tin. One issue to keep in mind is that Triton tests have accuracy problems with trace elements. There's an article available, if you'd like to do some reading.

There could be a number of issues involved in the coral problems. What other corals are in the system, and are they doing well? I'd check lighting levels and other water quality parameters, too.

Jonathan Bertoni
bertoni is offline   Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -6. The time now is 06:58 PM.

TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.